Help how its working

[deep_scjp]

Dear friends
This is my first posting in java ranch ,i have problem in follwing code
class Base{
public int i=10;
public int getI()
{
return this.i;
}
}
class Derived1 extends Base
{
public int i=20;
public int getI()
{
return this.i;
}
}
public class Derived {
public static void main(String[] args){
Base b = new Derived1();
System.out.println("b.i"+ b.i );
System.out.println("b.getI()" + b.getI());
}
}

my question is when i print
System.out.println("b.i"+ b.i );
it is printing b.i 10 why becouse i am making object of drived class so it shoul print b.i 20 but when i printing b.getI()
it is printing 20 why ???
please descirbe in detail
thnx

[Anshuman Acharya]

polymorphism is only for overridden non-static methods. fields and static methods don't get overridden, they just get hidden.
from desborough's note:
Fields do not act polymorphically:
- whenever you access a field from outside the class, the declared type of the reference is used rather than the type of the object it refers to.
- regardless of the type of the reference, a method will always access its own fields rather than those of a derived class.
refer to any good book and you'll find the answer

[deep_scjp]

thnx Anshuman
i got your answer,

[Ajith Kallambella]

Your name "deep_scjp" does not comply with the JavaRanch naming policy. Please choose one that meets the requirements.

------------------
Ajith Kallambella M.
Sun Certified Programmer for the Java�2 Platform.